Session V: Graphene. Matteo Bruna CAMBRIDGE UNIVERSITY DEPARTMENT OF ENGINEERING

Transcription

1 Session V: Graphene Matteo Bruna

2 Graphene: Material in the Flatland Graphite Graphene Properties: Thinnest imaginable material Good(and tunable) electrical conductor Strongest ever measured Stiffest known material (stiffer than diamond) Highly stretchable crystal (up to 20%) High flexibility Chemical stability High charge carrier mobility (>10 6 cm 2 V -1 s -1 ) High transparency (97.7%) Single atomic plane of carbon atoms

3 Fields of potential application Electronics Composites Energy Nanoelectronics/ Quantum computing Lightweight & Superstrong materials Electrodes for batteries and supercaps Fast photodetectors/ Optoelectronics Light emitting devices Conductive inks (Printed/flexible electronics) RF tags Sensors Epoxy based Polymer Bone regrowth Siloxane base Fuel cells Paper batteries Replacement for Indium-Tin-Oxide (ITO) Flexible and transparent solar cells The World Market for CAMBRIDGE Graphene 2017, UNIVERSITY Future Markets, Inc Carbon Nanotubes DEPARTMENT and Graphene OF for ENGINEERING Electronics Applications: Technologies, Players and Opportunities, IDTechEx, 2010

4 Large scale pristine graphene productiontion Parameters Chemical Vapor Deposition Carbon Segretation Liquid Phase Exfoliation Starting material Hydrocarbon Substrate itself Natural graphite Max. Temperature High (1000 o C) High (>1000 o C) Room temperature Substrate Cu or Ni SiC None Major process steps 3 to 4 3 to 4 2 Area limited to Substrate size (m) Wafer size Substrate size (>m)

5 Fields of potential application Electronics Composites Energy Nanoelectronics/ Quantum computing Lightweight & Superstrong materials Electrodes for batteries and supercaps Fast photodetectors/ Optoelectronics Light emitting devices Conductive inks (Printed/flexible electronics) RF tags Sensors Epoxy based Polymer Bone regrowth Siloxane base Fuel cells Paper batteries Replacement for Indium-Tin-Oxide (ITO) Flexible and transparent solar cells The World Market for Graphene CAMBRIDGE 2017, UNIVERSITY Future Markets, Inc Carbon Nanotubes DEPARTMENT and Graphene OF for Electronics ENGINEERING Applications: Technologies, Players and Opportunities, IDTechEx, 2010

6 Fields of potential application Electronics Composites Energy Nanoelectronics/ Quantum computing Lightweight & Superstrong materials Electrodes for batteries and supercaps Fast photodetectors/ Optoelectronics Light emitting devices Conductive inks (Printed/flexible electronics) RF tags Sensors Epoxy based Polymer Bone regrowth Siloxane base Fuel cells Paper batteries Replacement for Indium-Tin-Oxide (ITO) Flexible and transparent solar cells The World Market for Graphene CAMBRIDGE 2017, UNIVERSITY Future Markets, Inc Carbon Nanotubes DEPARTMENT and Graphene OF for Electronics ENGINEERING Applications: Technologies, Players and Opportunities, IDTechEx, 2010

7 Graphene production, The World Market for Graphene CAMBRIDGE 2017, UNIVERSITY Future Markets, Inc Carbon Nanotubes DEPARTMENT and Graphene OF for Electronics ENGINEERING Applications: SPECTROSCOPY AND MATERIALS Technologies, Players and Opportunities, IDTechEx, 2010 GROUP

8 Graphene-inks for optoelectronics graphite Ultrasonication Centrifugation + Solvent

9 Graphene-inks for optoelectronics nm 1 nm = 1 Billionth of a meter

10 Graphene-inks for optoelectronics Number of flakes N= Number of Layers 10

11 Inks adaptable to many present printing techniques Ink-jet Spray-coating Roll to roll

12 Graphene-inks for optoelectronics Highly-doped Er 3+ fiber WDM Pump laser ISO Coupler PC OFF Flexible transparent optoelectronic devices ON Output Graphene mode-locker Graphene ultrafast lasers Thin film transistors Photovoltaic devices

13 Graphene inks and CVD for optoelectronics Touch screen displays Electronic paper Photovoltaic cells Sensors Radio frequency tags Smart textile

14 Our speakers Professor Ian Kinloch, Professor of Materials Science, The nanomaterials group, University of Manchester (UK) Dr Gordon Chiu, VP, Grafoid and Chief Scientist, Focus Graphite (Canada)